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post #9 of Old 01-28-2013
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Re: Can someone explain roach to me?

Square top mains provide a lot more roach, to the extreme. Sail area up high is good, b/c that's where there is more breeze. Also, triangles have some tip vortexes that are slow. Square top mains reduce the drag from these.

Merit 25 # 764 "Audrey"
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